/
file_operations.go
331 lines (300 loc) · 6.81 KB
/
file_operations.go
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package utils
import (
"archive/tar"
"archive/zip"
"compress/gzip"
"fmt"
"go-cms/global"
unpackit "go-cms/utils/unpackit"
"io"
"net/http"
"os"
"path/filepath"
"reflect"
"strings"
//"github.com/c4milo/unpackit"
//"github.com/Wanghongw/unpackit"
)
//@author: [88act-5](https://github.com/88act)
//@function: FileMove
//@description: 文件移动供外部调用
//@param: src string, dst string(src: 源位置,绝对路径or相对路径, dst: 目标位置,绝对路径or相对路径,必须为文件夹)
//@return: err error
func FileMove(src string, dst string) (err error) {
if dst == "" {
return nil
}
src, err = filepath.Abs(src)
if err != nil {
return err
}
dst, err = filepath.Abs(dst)
if err != nil {
return err
}
var revoke = false
dir := filepath.Dir(dst)
Redirect:
_, err = os.Stat(dir)
if err != nil {
err = os.MkdirAll(dir, 0755)
if err != nil {
return err
}
if !revoke {
revoke = true
goto Redirect
}
}
return os.Rename(src, dst)
}
func DeLFile(filePath string) error {
return os.RemoveAll(filePath)
}
//@author: [88act-5](https://github.com/88act)
//@function: TrimSpace
//@description: 去除结构体空格
//@param: target interface (target: 目标结构体,传入必须是指针类型)
//@return: null
func TrimSpace(target interface{}) {
t := reflect.TypeOf(target)
if t.Kind() != reflect.Ptr {
return
}
t = t.Elem()
v := reflect.ValueOf(target).Elem()
for i := 0; i < t.NumField(); i++ {
switch v.Field(i).Kind() {
case reflect.String:
v.Field(i).SetString(strings.TrimSpace(v.Field(i).String()))
}
}
}
// FileExist 判断文件是否存在
func FileExist(path string) bool {
_, err := os.Lstat(path)
return !os.IsNotExist(err)
}
func IsFileExist(filename string, filesize int64) bool {
info, err := os.Stat(filename)
if os.IsNotExist(err) {
fmt.Println(info)
return false
}
if filesize == info.Size() {
fmt.Println("安装包已存在!", info.Name(), info.Size(), info.ModTime())
return true
}
del := os.Remove(filename)
if del != nil {
fmt.Println(del)
}
return false
}
func CreateFile(name string) (*os.File, error) {
err := os.MkdirAll(string([]rune(name)[0:strings.LastIndex(name, "/")]), 0755)
if err != nil {
return nil, err
}
return os.Create(name)
}
func DownloadFile(url string, localPath string, filename string) (fullPath string, err error) {
res, err := http.Get(url)
if err != nil {
global.LOG.Error("下载失败 url = " + url + " ,error = " + err.Error())
return "", err
}
// 写入文件前,先创建文件夹
if err := CreateDir(localPath); err != nil {
fmt.Println(err.Error())
return fullPath, err
}
fullPath = localPath + filename
f, err := os.Create(fullPath)
if err != nil {
global.LOG.Error("下载失败,创建文件 fullName = " + fullPath + " ,error = " + err.Error())
return fullPath, err
}
defer f.Close()
_, err = io.Copy(f, res.Body)
return fullPath, err
}
// 压缩 (只能是zip 文件 gz不行) srcFile could be a single file or a directory
func Zip(srcFile string, destZip string) error {
zipfile, err := os.Create(destZip)
if err != nil {
return err
}
defer zipfile.Close()
archive := zip.NewWriter(zipfile)
defer archive.Close()
filepath.Walk(srcFile, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
header, err := zip.FileInfoHeader(info)
if err != nil {
return err
}
header.Name = path
if info.IsDir() {
header.Name += "/"
} else {
header.Method = zip.Deflate
}
writer, err := archive.CreateHeader(header)
if err != nil {
return err
}
if !info.IsDir() {
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
_, err = io.Copy(writer, file)
}
return err
})
return err
}
//解压缩 (只能是zip 文件 gz不行)
func Unzip(zipFile string, destDir string) error {
zipReader, err := zip.OpenReader(zipFile)
if err != nil {
return err
}
defer zipReader.Close()
for _, f := range zipReader.File {
fpath := filepath.Join(destDir, f.Name)
if f.FileInfo().IsDir() {
os.MkdirAll(fpath, os.ModePerm)
} else {
if err = os.MkdirAll(filepath.Dir(fpath), os.ModePerm); err != nil {
return err
}
inFile, err := f.Open()
if err != nil {
return err
}
defer inFile.Close()
outFile, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
if err != nil {
return err
}
defer outFile.Close()
_, err = io.Copy(outFile, inFile)
if err != nil {
return err
}
}
}
return nil
}
// 下面是 gz 文件操作------------------------------------------------------------------------------
//压缩 使用gzip压缩成tar.gz
func Gz(files []*os.File, dest string) error {
d, _ := os.Create(dest)
defer d.Close()
gw := gzip.NewWriter(d)
defer gw.Close()
tw := tar.NewWriter(gw)
defer tw.Close()
for _, file := range files {
err := compress(file, "", tw)
if err != nil {
return err
}
}
return nil
}
func compress(file *os.File, prefix string, tw *tar.Writer) error {
info, err := file.Stat()
if err != nil {
return err
}
if info.IsDir() {
prefix = prefix + "/" + info.Name()
fileInfos, err := file.Readdir(-1)
if err != nil {
return err
}
for _, fi := range fileInfos {
f, err := os.Open(file.Name() + "/" + fi.Name())
if err != nil {
return err
}
err = compress(f, prefix, tw)
if err != nil {
return err
}
}
} else {
header, err := tar.FileInfoHeader(info, "")
header.Name = prefix + "/" + header.Name
if err != nil {
return err
}
err = tw.WriteHeader(header)
if err != nil {
return err
}
_, err = io.Copy(tw, file)
file.Close()
if err != nil {
return err
}
}
return nil
}
//解压 tar.gz
func UnGz(tarFile, dest string) error {
srcFile, err := os.Open(tarFile)
if err != nil {
return err
}
defer srcFile.Close()
gr, err := gzip.NewReader(srcFile)
if err != nil {
return err
}
defer gr.Close()
tr := tar.NewReader(gr)
for {
hdr, err := tr.Next()
if err != nil {
if err == io.EOF {
break
} else {
return err
}
}
filename := dest + hdr.Name
file, err := createFile(filename)
if err != nil {
return err
}
io.Copy(file, tr)
}
return nil
}
func createFile(name string) (*os.File, error) {
err := os.MkdirAll(string([]rune(name)[0:strings.LastIndex(name, "/")]), 0755)
if err != nil {
return nil, err
}
return os.Create(name)
}
// 解压 tarFile 源文件 ,dest 解压目录
func Unzip_tx(tarFile, dest string) (path string, err error) {
file, _ := os.Open(tarFile)
defer file.Close()
// 1024*1024 1M 缓存
path, err = unpackit.Unpack(file, dest, "unknown-pack.json", 4*1024*1024)
if err != nil {
fmt.Println("txim 解压失败:" + err.Error())
return "", err
}
// 由于gz文件 没有文件头 ,解压后没有文件名 unknown-pack.实际是 json文件
return path + "/unknown-pack.json", err
}